公开(公告)号：WO1989007506A1

公开(公告)日：1989-08-24

申请号：PCT/JP1989000137

申请日：1989-02-10

Applicant: AMADA COMPANY, LIMITED ,  WASINO MACHINE CO., LTD. ,  UMETSU, Masahito ,  MATSUDA, Morikatsu

Inventor： AMADA COMPANY, LIMITED ,  WASINO MACHINE CO., LTD.

IPC: B23H07/10

CPC classification number: B23H7/10

Abstract: This invention relates to a structure for withdrawing used wire of a wirecut electric discharge machine. A wire withdrawal structure (41) consists of transfer belts (35) adapted to transfer a wire (27) while holding the wire (27) therebetween, and a feed roller (33) and a withdrawing roller (37) which are provided at the front and rear parts of the transfer belts (35), and which have a high hardness. The transfer belts (35) are provided at both ends thereof with non-driving rollers (43), and twisted at least once at those parts thereof which are within a transfer section (A). Since the wire (27) passes through the twisted transfer belts (35), it is held reliably and transferred straight owing to the aligning effect of the transfer belts (35). The feed roller (33) and withdrawing roller (37) which consist of a material of a high hardness do not wear. Therefore, the wire (27) is not vibrated, and it can be withdrawn smoothly irrespective of the wear on the transfer belts (35).

公开(公告)号：WO1989007505A1

公开(公告)日：1989-08-24

申请号：PCT/JP1989000136

申请日：1989-02-10

Applicant: AMADA COMPANY, LIMITED ,  WASINO MACHINE CO., LTD ,  MORINO, Asami ,  UMETSU, Masahito

Inventor： AMADA COMPANY, LIMITED ,  WASINO MACHINE CO., LTD

IPC: B23H07/10

CPC classification number: B23H7/10

Abstract: The present invention relates to a wirecut electric discharge machine which is adapted to subject a workpiece to electric discharge machining using a regular wire electrode having a diameter of, for example, 0.1 mm or above, and which enables the use of a thin wire electrode having a diameter less than 0.1 mm. A thin wire electrode (43) has a small tensile strength due to its minute diameter, so that an apparatus for handling a wire, which is to be used as a regular wire electrode, cannot be used therefor. To eliminate this inconvenience, an apparatus for handling a wire, which is to be used as a thin wire electrode, is provided in the vicinity of a lower wire guide unit (11), and a wire winding force of this wire handling apparatus is set sufficiently smaller than the tensile force of the thin wire electrode (43). Accordingly, a thin wire electrode (43) can be handled without being broken. The lower wire guide unit (11) can also be used for a regular wire electrode, and it is replaced as necessary by a lower wire guide unit for a thin wire electrode.